A surgical stapler is provided that includes a spring loaded lift that automatically adjusts a staple cartridge and/or staple formation between a range of sizes. The lift is automatically released as the staple firing mechanism begins its forward translation of the firing sequence. The automatic one-way adjustment also adjusts the staple cartridge while maintaining the cartridge parallel to the anvil to provide consistent staple formations.
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16. A surgical stapler comprising:
a first jaw comprising an anvil;
a second jaw having a proximal end and a distal end and comprising a cartridge comprising a plurality of staples, the first jaw movable towards and away from the second jaw; and
a cartridge lift disposed between the second jaw and the cartridge and wherein the cartridge lift is biased by a lift spring in a proximal longitudinal direction away from the distal end of the second jaw.
10. A surgical stapler comprising:
a first jaw comprising an anvil;
a second jaw comprising a cartridge comprising a plurality of staples, the first jaw movable towards and away from the second jaw;
a cartridge lift disposed between the second jaw and the cartridge, the cartridge lift arranged to move the cartridge towards the first jaw while the cartridge lift moves in a longitudinal direction; and
a cartridge lift spring biasing the cartridge lift proximally in the longitudinal direction.
1. A surgical stapler comprising:
a first jaw comprising an anvil;
a second jaw comprising a cartridge having a plurality of staples, the first jaw movable towards and away from the second jaw;
an actuator having an upper guide longitudinally slidable within the first jaw and a lower guide longitudinally slidable within the second jaw and longitudinally advanceable to move the first jaw towards the second jaw and deploy the plurality of staples from the cartridge; and
a cartridge lift disposed between the second jaw and the cartridge, the cartridge lift arranged to move the cartridge towards the first jaw while the cartridge lift moves in a longitudinal direction, wherein the cartridge lift is activated by longitudinal advancement of the actuator to a predetermined position.
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This application is a continuation of International Application No. PCT/US2015/050103, filed Sep. 15, 2015, which claims the benefit of U.S. Application No. 62/050,513, filed on Sep. 15, 2014, the entire disclosure of which is hereby incorporated by reference as if set forth in full herein.
This application relates generally to surgical staplers and in particular to surgical staplers with a self-adjusting staple height mechanism, system and/or process.
Some surgical staplers include mechanisms to provide adjustable jaw gaps and formed staple sizes. However such staplers require user input, require an estimation or measurement of tissue, do not provide any mechanism or process to make such an estimation or measurement, and do not provide sufficient user feedback on the pressure being applied. Such staplers also do not account for limitations associated with laparoscopic surgery such as space and size constraints.
Examples of a non-laparoscopic stapler have a dial or knob on the back of the device which allows the user to manually adjust the closed staple height from a range of 1.0 mm to 2.5 mm. The devices also have a viewing window which displays the expected “Gap Setting” to the user or the expected closed staple height. Other staplers have a three position toggle switch that allows the user to manually select the closed staple height to 1.5 mm, 1.8 mm, or 2.0 mm.
Such staplers are thus fired at a fixed jaw gap height and compress all the tissue contained in the jaw of the stapler to that specific height. In some cases, users are required to choose a specific staple reload with a specific height to be used based on the user's expertise, experience of past staple firings, and perception of tissue to be fired on. Additionally, inherently the anatomies of human organs do not have constant or consistent wall thicknesses and also vary from patient to patient. Healthy tissue being compared to diseased or inflamed tissue will also widely vary in size and thickness. As such, the decision of what size staple reloads to use is a difficult one. Also, although there are a wide range of staple reloads being offered at various jaw gap heights and staple sizes, the staplers do not offer an accommodation for tissue thickness.
For some staplers, staple size is chosen by the user, prior to use, based on surgeon's perception of tissue thickness (no measuring device provided, used or contemplated) or through past experience on similar tissue. However, thickness of a particular organ within a patient can vary as well as similar anatomy in other patients. As such, choosing a correct staple size for a given tissue is difficult and it is often difficult to identify if the given tissue fits within one of four or five finite sizes identified or intended for a given staple. Instructions for use for such staplers suggest correctly sized staple can be used for a particular range of tissue thickness. However, users are not provided any mechanisms or process for accurately or efficiently measuring the tissue. Matters are thus further complicated in that multiple choices of staple sizes increase permutations for identifying the proper staple size, tissue thickness, and/or force.
Also, since the stapler is fired at one fixed height, the stapler will always deliver a staple that is for example 1.5 mm in its formed height. This can be problematic if the user chooses to fire the stapler over tissue that is outside the intended range of the device, often times limited to a 0.5 mm window. As such, the formed staple does not capture or form into the tissue and thus does not provide the intended seal or closure of the tissue by the formed staple. Hence, the formed staple is too large for the given tissue. Additionally, measuring of tissue thickness prior to firing of the stapler is not available and even if available accuracy of such a measurement would be difficult to obtain.
As such, using an incorrect staple size having an incorrect staple height for a specific tissue thickness can result in not correctly forming a staple and/or excessive compression or blood flow restriction in forming the staple that may potentially lead to other complications.
A self-adjusting height reload stapler is provided that automatically adjusts to the size of tissue placed in the jaws. As such, the surgical stapler accounts for the tissue thickness and automatically adjusts based on actual tissue thickness and not based on a user's guess or estimation. The stapler thus provides sufficient tissue compression to provide a seal and hemostasis at the cut line without clamping or pressing too hard to produce ischemia and/or tissue damage.
The stapler allows for jaw gap compensation should the user choose a staple size or cartridge that is too large for the tissue being stapled across. Hence, the stapler has the ability to conform to any tissue between the maximum jaw gap height (e.g., 0.037″/0.038″) and minimum jaw gap height (e.g., 0.017″/0.018″) instead of firing at a single pre-determined finite height.
The stapler forms staples at a specific staple height for a particular tissue based on tissue thickness. The stapler uses pressure-force feedback from tissue being compressed within the jaws to adjust and set the proper staple height (height of the staple after being formed). The stapler jaws in contact with the tissue is able to detect and react to tissue thickness and adjust the staple height accordingly to provide an ideal closed staple height for each firing of the device for each tissue captured by the device.
In various embodiments, a stapler is provided that includes a one-way spring loaded lift that automatically adjusts a staple cartridge and/or staple formation between a range of sizes (e.g., jaw gap and/or closed staple heights). The lift is automatically released as the staple firing mechanism begins its forward translation of the firing sequence. The automatic one-way adjustment also adjusts the staple cartridge while maintaining the cartridge parallel to the anvil to provide consistent staple formations. In various embodiments, a surgical stapler comprises an automatic vertical adjustment staple cartridge.
In various embodiments, a surgical stapler comprises a first jaw comprising an anvil and a second jaw comprising a cartridge comprising a plurality of staples, the first jaw being movable towards and away from the second jaw. The stapler further comprises a cartridge lift disposed between the second jaw and the cartridge and the lift is arranged to move the cartridge towards the first jaw while the lift moves in a longitudinal direction.
In various embodiments, a surgical stapler comprises a first jaw comprising an anvil and a second jaw comprising a cartridge comprising a plurality of staples, the first jaw being movable towards and away from the second jaw. The stapler further comprises a cartridge lift disposed between the second jaw and the cartridge and the lift is arranged to move the cartridge towards the first jaw while the lift moves in a longitudinal direction. The stapler further comprises a cartridge lift spring biasing the cartridge lift proximally in the longitudinal direction.
In various embodiments, a surgical stapler comprises a first jaw comprising an anvil and a second jaw having a proximal end and a distal end and comprising a cartridge, the first jaw being movable towards and away from the second jaw. The stapler further comprises a cartridge lift disposed between the second jaw and the cartridge and the cartridge lift is biased in a proximal longitudinal direction away from the distal end of the second jaw.
In various embodiments, a surgical stapler comprises a first jaw comprising an anvil and a second jaw comprising a cartridge, the first jaw being movable towards the second jaw. The stapler further comprises an actuation beam having an upper arm and a lower arm and defining a distance between the upper and lower arms, the distance being adjustable.
In various embodiments, a surgical stapler comprises an upper jaw including an anvil and a lower jaw including a cartridge. The lower jaw is movable towards the upper jaw and a distance between the upper and lower jaws is adjustable. A proximal most portion of the jaws has a near zero gap between the upper and lower jaws.
These and other features of the invention will become more apparent with a discussion of embodiments in reference to the associated drawings.
The present inventions may be understood by reference to the following description, taken in connection with the accompanying drawings in which the reference numerals designate like parts throughout the figures thereof.
In accordance with various embodiments surgical staplers are provided. The stapler in various embodiments includes a one-way vertically adjustable staple cartridge. The stapler also includes one jaw to hold the staple cartridge and a second jaw to hold an anvil. The jaws and shaft are dimensioned to fit through a cannula delimiting at most an inner diameter of 12 mm. The shaft is positioned between the jaws and an actuator. The actuator allows a user, e.g., a surgeon, to manipulate a handle, lever, switch or other operationally accessible actuators to open and close the jaws to grasp tissue, articulate the jaws from side to side, fire the staples out the staple cartridge and into the grasped tissue and cut tissue between the jaws. The vertically adjustable staple cartridge is automatic utilizing no-user interaction and applies a vertical uniform compression force towards and on tissue against the anvil after the jaws are closed. In one embodiment, the vertically adjustable mechanism is only activated after the jaws are closed, the firing mechanism enabled and firing commenced without the ability to un-fire or stop firing. This prevents unwanted tissue compression or trauma.
The vertically adjustable mechanism drives the staple cartridge only vertically towards the anvil no side to side or wobbling is permitted. Additionally, in various embodiments, the staple cartridge is movable only towards the tissue and anvil and not away from the tissue or anvil. As such, once the vertically adjustable mechanism is activated, the stapler cartridge is movable in only one direction.
Referring to
The upper jaw 11 includes an anvil 9 for forming a plurality of staples 6 sequentially ejected from a staple cartridge 5. The upper jaw 11 is pivotably coupled to upper outer cover 91 that is connected to a lower outer cover 92. The upper jaw 11 includes jaw springs 93 biasing the upper jaw to an open or spaced condition. The lower outer cover 92 is connected to a retainer 121. The retainer 121 holds a rampway 80 affixed to the retainer and including a plurality of ramps 81. The retainer 121 also houses a movable cartridge platform or lift 82 including a plurality of ramps 83 that correspondingly mate with the plurality of ramps 81 of the rampway 80. The staple cartridge 5 sits upon the cartridge lift 82. When the cartridge lift 82 is moved longitudinally and proximally (e.g., as illustrated by arrow H), the ramps 83 of the cartridge lift 82 slide on the ramps 81 of the rampway 80 which moves the cartridge 5 vertically (e.g., as illustrated by arrow V) or in a direction traverse to (e.g., perpendicular to) the longitudinal axis 1 of the STR 10.
The staple cartridge 5 includes a plurality of staples 6 and a corresponding set of staple pushers 7 situated in a plurality of staple pockets. Through interaction of a set of fins 171 on a slider 17 with the staple pushers, the staples are fired or ejected from the staple cartridge 5. Staples within the cartridge 5 are thus fired through the longitudinal movement of the slider that interacts with staple pushers within staple pockets of the cartridge. Fired staples penetrate tissue clamped between the jaws 11, 12 and are formed against anvil pockets on the anvil 9. The slider 17 is operatively connected to an actuation beam 18. The actuation beam 18 includes a blade 19 and is connected to an actuation slide 180. In one embodiment, the actuation slide 180 includes a proximate actuation slide 181 coupled to a distal actuation slide 182. The distal actuation slide 182 is perpendicular to the proximate actuation slide 181 with both slides extending parallel to the longitudinal axis 1 of the STR 10. In the illustrated embodiment, the intersection of the proximal and distal actuation slides in cross-section forms a cross.
The actuation beam 18 has an upper guide or roof 183 that is configured to move within a longitudinal slot or channel in the upper jaw 11 and a lower guide or floor 184 that is configured to move within a longitudinal slot or channel in the lower jaw 12. Likewise, the staple cartridge 5, cartridge lift 82 and the retainer 121 includes a longitudinal channel through which the lower guide 184 moves therethrough. The upper and lower guides of the actuation beam ensure parallel jaw alignment and compression of the closing of the jaws 11, 12.
The actuation slides 181, 182 are surrounded by an actuation cover tube 185 that includes an opening 186 through which a STR reuse lockout 41 is biased by a leaf spring 42 through the opening 186 in the actuation cover tube 185. The actuation cover tube includes slots or guides to ensure alignment and translational movement of the actuation slides 181, 182.
An outer tube 94 surrounds the actuation cover tube 185 and is connected to actuator interface 15 with a pair of opposing protrusions on opposing sides of the interface for a removable connection to the STR coupler 151. A coupler spring 152 is positioned between the rotator and STR coupler to bias the rotator in the distal direction such that movement of the rotator in the proximal direction compresses the spring and exposes the coupler 151 and the connection thereto for removably connecting with actuator interface 15. Extending parallel to the actuation cover tube 185 and the actuation slides 181, 182 is an articulation beam 51. The articulation beam 51 includes a proximal end that is connected to the upper and lower outer covers 91, 92 and in one embodiment sits and rides within slots of the actuation cover tube 185.
The actuator 2 is operably coupled to the removably coupled STR 10 and actuates the jaws 11, 12 from an open-close configuration to a one-way automatic self-adjusting stapling or forward configuration to a reverse configuration through the driving or manipulation of the actuation beam 18 forward or backwards (distally or proximally).
In an initial position of the stapler, the actuation beam 18 is positioned at the most proximal position of its travel and the jaws 11, 12 are in an open configuration or position. The actuation beam engages the upper jaw 11 upon translation of the actuation beam distally along the longitudinal axis 1 of the elongate shaft 14. Translation of the actuation beam distally from the initial position a first predefined longitudinal distance (e.g., 0.225″) can actuate the jaws from an open position to a closed position. With the jaws in the closed configuration, the actuation beam can be returned proximally, as influenced by the jaw springs biasing the jaws open, traveling the same first distance to return the jaws to the open position. The trigger 21 of the actuator 2 is operatively coupled to the actuation beam such that as the trigger is squeezed, the jaws close, and as the trigger is pushed open or in one embodiment released, the jaws open. In one embodiment, the trigger 21 is connected to a forward distal pivot pawl 25 with a tip or tooth engageable with a groove or cut-out 71 in an actuation rod 62 operatively connected to the actuation beam 18. The engagement of the forward distal pivot pawl with the groove 71 in the actuation rod assists in moving the actuation rod in the distal direction as the trigger is pivoted towards the handle base. Such movement of the actuation rod in the distal direction moves the actuation beam 18 in the distal direction causing the jaws to close.
Likewise, in one embodiment, the trigger 21 is connected to a forward proximal pivot pawl 28 with a tip or tooth engageable with a groove or cut-out 72 in an actuation rod 62 operatively connected to the actuation beam 18. The engagement of the forward proximal pivot pawl with the groove 72 in the actuation rod assists in moving the actuation rod in the proximal direction as the trigger is pivoted away from the handle base or released. Such movement of the actuation rod in the proximal direction allows the jaws to open. The trigger 21 is biased by a spring causing the trigger to be biased back to an initial or open position with the trigger pivoted away from the handle base. The forward distal pivot pawl 25 and the forward proximal pivot pawl 28 are pivotable connected to the trigger 21 and in one embodiment form or resemble a “V” with the distal pivot pawl 25 extending in a direction that is opposite to that of the proximal pivot pawl 28. The groove or cut-out 71 operatively engageable with the distal pivot pawl 25 is near the distal end of the actuation rod and is distal from the groove 72 that is operatively engageable with the proximal pivot pawl 28. The open-close operation can be repeated multiple times as desired by the user to for example grasp or dissect tissue for a given surgical procedure.
In various embodiments, a STR recognition barrel 31 prevents activation or movement of the firing operation unless a STR 10 is attached to the actuator 2. Movement or articulation of the trigger 21 of the actuator 2 however is not prevented. Allowing movement of the actuator can assist in packaging and testing of the actuator. Additionally, this allows the attachment of other front-end actuation units that may require grasping and/or articulation with or without the ability or use for firing staples and thereby increasing the versatility of the actuator 2. In various embodiments, attaching a STR moves the recognition barrel 31 proximally which in turn compresses a STR recognition barrel spring 32 coupled to the recognition barrel. The spring 32 biases the recognition barrel distally and in one embodiment is coupled and captured between the outer surface of an articulation barrel 55 and the inner surface of the recognition barrel surrounding the spring 32. The recognition barrel, spring and articulation barrel are coaxially aligned. Movement of the recognition barrel moves a fire connector arm 33 connected to the barrel. In one embodiment, the connector arm 33 has a distal end affixed to a proximal end of the recognition barrel with a notch in the distal end of the connector arm 33 engaged with a peripheral flange around the proximal end of the recognition barrel. The proximal end of the connector arm 33 has a flange that is slidably coupled to an arming hub 61 through a notch or slot disposed in the arming hub. With the flange of the connector arm 33 disposed in the slot of the arming hub 61, rotational movement of the arming hub 61 is prevented. As will be described in greater detail below, rotational movement of the arming hub 61 rotates an actuation rod 62 allowing the interaction of the rod and trigger to fire the staples or open/close the jaws.
The arming hub 61 is also connected to a firing button 60 that allows a user to set the stapler in a firing mode or a reverse mode with each activation of the button rotating the rod into the respective operational position for the corresponding operation. As such, the connector arm 33 disposed in the slot of the arming hub 61 prevents rotation movement of the arming hub that also prevents activation of the fire button and thus prevents changing of the operation of the stapler. As a STR is attached to the actuator, full operation of the handle assembly is restored or allowed to proceed. In one embodiment, a bifurcated actuation rod, e.g., a proximal actuation rod 63 and a distal actuation rod 64, allows rotational movement by the user via the rotator 16 without effecting operation of the stapler.
The distal end of the actuation rod 62 is removably coupled to the actuation slide of the STR. In one embodiment, the distal end of the actuation rod includes a slot configuration arranged to receive corresponding mating flanges on the actuation slide to twist and lock into a removable mating connection of the actuation rod to the actuation slide 180. As such, translation movement of the actuation rod also translates the actuation slide.
Once the jaws 11, 12 are fully closed by squeezing the trigger, the user can push the forward or fire button 60 on the actuator to change the mode of the handle to the forward configuration where the firing and self-adjusting mechanisms are activated.
As previously described, in one embodiment, the fire button 60 cannot be actuated until a STR is attached. In one embodiment, the fire button 60 also cannot be actuated until the actuation rod has traveled the predefined first distance distally. In accordance with various embodiments and as shown for example in
Once in the fire activation configuration, actuation of the trigger drives the actuation beam distally (i.e., only in one direction). In one embodiment, the first squeeze of the trigger also activates the self-adjusting height mechanism to resize the gap between the jaws. In one embodiment, the cartridge lift 82 in the lower jaw 12 will activate causing the cartridge to lift up or move only vertically and self-adjust to the tissue in the jaws. In one embodiment, at this time, an STR reuse lock 41 will also be activated. This STR reuse lock 41 ensures that the STR is only placed into the fire mode once, to prevent the user from inadvertently attempting to fire a previously used STR. Once the STR returns to the open-closed or initial position, the STR reuse lock 41 prevents the STR from firing again. Further actuation of the trigger will drive the actuation beam further forward sequentially ejecting staples and transecting the tissue grasped between the closed jaws.
In one embodiment, the slider 17 has one or more inclined fins 171 and is movable longitudinally to sequentially contact staple pushers 7 to eject the staples 6 in the staple cartridge 5. An actuation beam 18 movable longitudinally moves the slider distally and longitudinally. The slider in one embodiment is not connected and does not include keys, hooks or cavities to attach to the actuation beam. As such, the slider can only move longitudinally distally and is not able to return or move back or towards its proximal or initial position by movement of the actuation beam. The actuation beam 18 however can move back or towards its proximal or initial position. As such, in one embodiment, this allows the pushers 7 to fall back within the staple cartridge after being partially ejected or moved vertically by the longitudinal movement of the slider. This movement back into the cartridge reduces potential trauma to tissue, potential sticking to the staple or tissue and thus an overall smoother surface of the staple cartridge for removal of the tissue from between the jaws.
Additionally, the simultaneous allowance or lack of restriction of the actuation beam to move back or towards its proximal or initial position and then back provides further cutting of tissue or passes to cut tissue if desired or needed in such embodiments in which a cutting blade 19 is incorporated or attached to actuation beam 18. The actuation beam includes an upstanding edge with top and bottom perpendicular edges forming or incorporating the upper guide 183 and the lower guide 184. The upstanding edge travels within a longitudinal slot or channel extending through the staple cartridge and between the staple and staple pushers. The cutting blade is incorporated or attached to the upstanding edge of the actuation beam to cut tissue between jaws. The blade and upstanding edge of the actuation beam in one embodiment thus travels through a longitudinal channel within the staple cartridge, the anvil or both. The top and bottom perpendicular edges ride along outer surfaces of the jaws and ensure a fixed gap height, i.e., the distance between the top and bottom edges, and localized and compressive forces against the tissue. The top perpendicular edge or upper guide compresses the anvil and tissue vertically down towards and against the staple cartridge and the other jaw and the bottom perpendicular edge or lower guide compresses the staple cartridge and tissue vertically up towards and against the anvil and opposing jaw. The compression forces are localized to where the edges are positioned on the outer surfaces of the jaw during the actuation or firing stroke of the actuation beam.
When the fire button 60 is engaged, as shown for example in
The arming hub 61 is circular in shape with a center opening through which the actuation rod extends there through. The outer portion of the arming hub has a slot or groove that operationally connects to a connecting arm. Along another portion of the outer portion are a series of teeth that operationally connects to or mates with a similar series of teeth of the firing button 60. The inner portion of arming hub has a protrusion or nub extending towards the center opening and mates with a longitudinal slot in the actuation rod.
With the fire or forward button engaged and the actuation rod rotated, a tip or tooth of the proximal pivot pawl 28 and distal pivot pawl 25 now operationally engage with a series of teeth 73 longitudinally disposed along the actuation rod 62 (and/or as illustrated proximal actuation rod 63). The trigger 21 when pivoted causes the proximal pivot pawl 28 and the distal pivot pawl 25 to translate distally along or relative to the actuation rod. Once the proximal pivot pawl 28 engages a tooth of the teeth 73 in or on the actuation rod, the actuation rod moves or translates distally as the trigger continues to pivot. Releasing of the trigger or moving it away from the handle base 22 causes the proximal pivot pawl 28 and the distal pivot pawl 25 to move back proximally along or relative to the actuation rod. However, the tip or tooth of the proximal pivot pawl 28 and distal pivot pawl 25 now operationally engage with a more proximal portion of the series of teeth 73 longitudinally disposed along the actuation rod 62. The distal pivot pawl 25 engaging a tooth of the series of teeth 73 prevents proximal movement of the actuation rod, the actuation slides and the opening of the jaws. The proximal pivot pawl engaging a tooth of the series of teeth 73 allows further distal movement of the actuation rod, the actuation slide, the actuation beam, continued firing of the staples and cutting of tissue between the jaws. As such, multiple strokes or squeezing and releasing of the trigger may be performed to fully move the proximal and distal pivot pawl to completely eject the staples and cut the tissue between the jaws. In one embodiment, only a single stroke is utilized to eject the staples and cut the tissue between the jaws. The actuator at its end of travel or complete firing of the staples is shown for example in
In accordance with various embodiments, the trigger 21 is coupled to an intermediate action gear 23 and a trigger action gear 24. The trigger action gear 24 in the illustrated embodiment has a center opening through which a pivot protrusion of the movable handle extends there through. The trigger action gear includes a series of teeth engaged or connected to a set of two sets of teeth on the intermediate action gear. Pivoting the trigger 21 rotates the trigger action gear that correspondingly rotates the intermediate action gear 23. In particular, squeezing the trigger 21 causes the trigger action gear 24 to rotate in one direction, e.g., counter-clockwise, that in turn causes the intermediate action gear 23 to rotate in the opposite direction, e.g., clockwise. The other set of teeth of the two sets of teeth of the intermediate action gear engage with teeth on a movable rack 27 and thereby moves the rack proximally. The movable rack in one embodiment is positioned parallel to the actuation rod. Moving the rack proximally also moves or translates a reverse pawl 26 proximally. In the firing configuration and during the firing of the staples, the tip of the reverse pawl sits and slides against an outer surface or slot in or on the actuation rod 62 (and/or as illustrated proximal actuation rod 63). As such, the rack is movable distally and proximally based on the actuation or pivoting of the trigger.
In one embodiment, when the tip of the reverse pawl 26 moves to a proximal or proximal most position it engages a wall in the slot of the actuation rod or a tooth along the actuation rod 62. The wall or tooth of the actuation rod 62 acts as a hard or additional stop preventing further distal movement of the actuation rod.
The rack 27 is disposed in a slot or channel in the handle base 22 and in one embodiment the rack 27 when moved to a proximal or proximal most position engages a wall or proximal end of the slot that prevents further proximal movement of the rack 27 and thus resists further rotation of the intermediate action gear 23 that resists further rotation of the trigger action gear 24 and thereby prevents further squeezing or closing of the trigger 21. Likewise, in one embodiment, the rack 27 when moved to a distal or distal most position it engages a wall or distal end of the slot that prevents further distal movement of the rack 27 and thus resists further rotation of the intermediate action gear 23 that resists further rotation of the trigger action gear 24 and thereby prevents further opening of the trigger 21 or movement of the trigger away from the handle base.
Accordingly, actuation of the trigger towards the handle base 22 rotates the intermediate action gear 23 in one direction, e.g., clockwise, which translates the rack 27 proximally and actuation of the trigger away from the handle base rotates the intermediate action gear in an opposite direction, e.g., counter-clockwise, which translates the rack distally. The reverse pawl 26 pivotable connected to a distal end of the movable rack 27 slides proximally and distally as the rack translates proximally and distally.
In accordance with various embodiments, the surgical stapler provides a one-way automatic vertical adjustment of the staple cartridge 5. The cartridge 5 is moved vertically within lower jaw 12 and, in one embodiment, the cartridge is movable vertically relative to a retainer 121 of the lower jaw 12. The cartridge in the lower jaw is movable vertically (e.g., as illustrated by arrow V) towards the anvil through the interaction of ramps 83 located on a bottom surface of a cartridge lift 82 with ramps 81 located on a rampway 80. The cartridge sits on an upper surface of the cartridge lift 82. The upper surface of the cartridge lift 82 is generally flat and/or devoid of any ramps. In one embodiment, the cartridge lift includes guides or ridges along the sides of the cartridge lift to ensure proper seating or assembly of the cartridge on the upper surface of the cartridge lift. The cartridge lift in one embodiment also includes a channel or slot there through to accommodate the blade and/or the upstanding edge of the actuation beam movable longitudinally there through. The cartridge in the illustrated embodiment is arranged to move only in one direction, vertically (e.g., as illustrated by arrow V). The cartridge lift is also positioned between the cartridge and the rampway. The rampway remains stationary and is not movable while the cartridge is movable in one direction, vertically, and away from the rampway. When the cartridge lift is moved longitudinally and proximally (e.g., as illustrated by arrow H), the ramps 83 of the cartridge lift slide along the ramps 81 of the rampway 80, which remains fixed within the lower jaw 12, and thereby raises the cartridge 5 vertically. As such, the surgical stapler includes a series of ramps to lift the cartridge vertically and allow for the adjustment of the formed staple heights to a plurality of intermediate points between upper and lower staple height and gap limits and along a slope of the ramps.
The cartridge lift 82 in one embodiment is also biased in the proximal longitudinal direction. Such biasing in one embodiment only occurs once the height adjustment mechanism has been activated or firing operation has been commenced, e.g., the actuation slide has traveled past a first predefined distance. In one particular embodiment, the cartridge lift 82 is biased or tensioned by a cartridge lift spring 87 pulling the cartridge lift in the proximal direction along or aligned with the longitudinal axis. The biased lift provides an active vertical force against the cartridge 5 forcing it against the tissue held between the jaws 11, 12.
In a further embodiment, initially, the spring 87 or tension mechanism is locked or inactivate and thus does not provide any tension or force pulling the cartridge lift in the proximal direction. As such, when inactive, the cartridge 5 and the associated cartridge lift 82 remains at its initial or lowest vertical position.
The cartridge lift 82 is biased or pulled in the proximal direction (e.g., as illustrated by arrow H) by the spring 87 when the lift is unlocked or the spring is released. Once unlocked, the cartridge lift is pulled or tensioned proximally and thus resists movement distally back to its original or initial position or simply cannot move freely distally. Likewise, the cartridge 5 is lifted vertically from its initial or lowest position. The amount or distance the cartridge travels vertically is based on the force applied by the spring, the amount of tissue between the jaws and the clamping or compression force applied by the jaws closed over the tissue. In accordance with various embodiments, the cartridge applies a uniform one-way constant vertical force as biased by the force applied by the spring. The cartridge lift and/or lift bias or spring (e.g., spring 87) in various embodiments is blocked by lift lock and in various embodiments the lift lock is not user accessible. Once the lift lock is displaced, the cartridge lift is pulled or tensioned and thus resists is unable to move back to its original or initial position.
In the illustrated embodiment, the cartridge lift 82 is connected to a cartridge lift beam 84 that is connected to a cartridge lift barrel 85. In one embodiment, the proximal end of the cartridge lift includes an opening for receiving a pin and a slot for receiving a flange connected to or extending from the distal end of the cartridge lift beam 84. The proximal end of the lift beam is connected, e.g., welded or riveted, to the distal end of the lift barrel 85. The lift barrel has a central opening and is disposed around or surrounds the actuation cover tube 185. The lift barrel is thus coaxial with the actuation cover tube 185, the actuation slide 180, the actuation rod 62 and the lift beam 84 and is likewise parallel to the actuation slide 180 and the actuation rod 62. The lift barrel is biased in the proximal direction (e.g., as illustrated by arrow H) by a cartridge lift spring 87. The cartridge lift spring also surrounds the actuation cover tube 185 and is positioned aligned and between the upper and lower outer covers 91, 92 and the lift barrel 85. In the illustrated embodiment, a cartridge lift spacer 86 is placed between the spring and the lift barrel (e.g., after/behind the spring) or in one embodiment between the upper and lower outer covers and the spring (e.g., before/in front of the spring) to accommodate tolerances in assembly or sizing of the spring and thus strength of the spring to ensure the appropriate compression force is applied for a given tissue grasped between the jaws. The lift barrel 85 remains blocked or is prevented from moving proximally until or just before the staples can be fired or the stapler is in a firing configuration or position. The lift barrel 85 in various embodiments is blocked by lift lock and in various embodiments the lift lock is not user accessible. In various embodiments, the lift lock is a reload or STR reuse lockout. In various embodiments, the STR reuse lockout 41 is biased to be aligned with the lift barrel 85 and thus in contact with the lift barrel to prevent longitudinal proximal movement of the lift barrel. Once the STR reuse lockout is misaligned or moved out of contact with the lift barrel, the lift spring 87 biases the lift barrel proximally. In various embodiments, the lift lock or the STR reuse lockout is in contact or coupled to the actuation slide and thus becomes misaligned once the actuation slide starts the firing operation or just before the staples can be fired or is ready to be fired.
In one embodiment, the lift barrel also slides over the STR reuse lockout preventing the alignment of the STR reuse lockout with the lift barrel. As such, once the lift barrel is activated, the lift barrel cannot be locked again or returned to its initial or proximal position. Likewise, the cartridge lift connected to the lift barrel by the lift beam cannot return to its initial or proximal position. Also, the cartridge lift under the influence of the spring and barrel movement, moves longitudinally and proximally (e.g., as illustrated by arrow H). The interaction of the ramps of the cartridge lift and ramps of the rampway as the cartridge lift moves proximally causes the cartridge lift to move the staple cartridge 5 uniformly vertically (e.g., as illustrated by arrow V). In accordance with various embodiments, slots or channels interacting with corresponding protrusions or detents on the cartridge, the retainer or both ensure or assist in a uniform and singular vertical movement of the cartridge. The interaction of the ramps and biasing of the lift barrel also act as an integrated height lockout for the staple cartridge allowing the stapler to fire at the adjusted staple height without being able to be forced back open or to a previous position.
The adjustment of the cartridge height occurs while the jaws are closed on a piece of tissue and is made automatically by the stapler. The surgeon/user does not choose the staple height or staple size. As such, staple height is set automatically by stapler based on thickness of tissue and the resistance it provides. The adjustment of the cartridge height also produces a movement of the cartridge with respect of the anvil while the top and bottom surfaces are parallel. During the adjustment, the top and bottom surfaces remain parallel and the surfaces remain parallel once the movement is complete.
As shown in
Once firing of the staples is initiated or activated, the actuation slide moves forward distally allowing the distal end of the STR reuse lockout 41 to fall within a slot or opening 187 in the actuation slide. As such, the distal end of the STR reuse lockout rides or sits on the outer surface of the slot within the actuation slide as shown in
The top or outer surface of the distal end of the STR reuse lockout falls under a bottom surface of the outer cover tube, the lift barrel or both. Likewise, the bottom or lower surface of the distal end of the STR reuse lockout rides on top of the slot or lower distal surface of the actuation slide. As such, the distal end of the STR reuse lockout is disposed or trapped between the outer cover tube or lift barrel and the actuation slide. Additionally, the STR reuse lockout does not move longitudinally unlike the actuation slide but pivots or moves perpendicular or transverse to the longitudinal direction of the actuation slide.
As the actuation slide moves back, the distal end of the STR reuse lockout gets trapped within a distal slot in the actuation slide as shown in
In accordance with various embodiments, the staple cartridge 5 includes one or more detents or protrusions 551, 552 positioned and shaped to mate with and slide within slots or openings 1211, 1212 disposed on the lower jaw 12. The protrusions 551, 552 are positioned on the side walls of the staple cartridge and the slots 1211, 1212 are positioned on the side walls of a cartridge holder, retainer 121 or lower jaw 12 of the stapler. The engagement of the protrusions and slots ensures that the staple cartridge can move vertically but also ensures that the staple cartridge only moves vertically and not side to side or longitudinally distally or proximally. In various embodiments, protrusions or detents, e.g., protrusions 1211, restrict movement of the staple cartridge other than vertically and prevent removal of the staple cartridge from the lower jaw of the stapler. In various embodiments, the staple cartridge although movable vertically is permanently affixed to the jaw and thereby restricts reuse of the staple cartridge or inadvertent discharge or removal of the staple cartridge ensuring consistent stapler operations. In various embodiments, only a single protrusion or a set of protrusions, e.g., protrusions 1211, protrusions 1212, or combinations thereof, are disposed on the staple cartridge.
The staple cartridge in various embodiments is a single monolithic structure to assist in applying a uniform force to compress the tissue. Individual staple pushers are disposed in the stapler cartridge in individual pockets with individual staples in each pocket. Activation of a staple pusher ejects the associated staple out of the staple pocket and into the clamped tissue and an anvil forming or closing the staple.
In one embodiment, the fins of the slider 17 are longitudinally offset as such fins on one side, e.g., a right side relative to the blade, is set in a more distal position then the fins on the opposing side, e.g., a left side relative to the blade. The left side fins thus is placed in a more proximal position than the right side fins. The offset of the fins provides a distribution of force in ejecting of the staples and as such reduces potential excessive compression of the tissue and the amount of force required to sequentially eject the staples from the staple pockets via the staple pushers.
The stapler includes an articulation lever or switch 50 that toggles the jaws 11, 12 from a zero or initial position to an angled or 45 degrees position relative to the longitudinal axis along the elongate shaft and back again to the zero or initial position. When a surgeon activates the lever, the lever engages an articulation forward arm 52 and an articulation rear arm 54 that moves from a split or misaligned position to an aligned and linear position. One end of the rear arm is connected to the lever and the other end of the rear arm is connected to the housing base. One end of the forward arm is connected to the rear arm along its middle portion and the other end of the forward arm is connected to an articulation extension arm 53.
The other end of the articulation extension arm 53 is connected to an articulation hub 57 surrounding and connected to an articulation barrel 55. The articulation barrel has a bayonet coupling arranged to releasably connect to an articulation beam 51 with a distal end connected to a pivot post near a jaw pivot post that pivotally connects the jaws 11, 12. The pivot post is disposed perpendicular to the jaw pivot post and offset the center or longitudinal mid-line of the elongate shaft. Placing the articulation forward and rear arms in-line with each other pulls or slides the articulation extension arm 53 proximally that slides the articulation hub and barrel proximally pulling the articulation beam proximally. Proximal movement of the beam pulls on the pivot post causing the upper and outer covers 91, 92 connected to the jaws 11, 12 and connected to the pivot post to be pulled proximally. Since the pivot post is arranged offset the center of the shaft, the jaw covers moves in a direction towards the pivot post to place the jaws in an angled position. With the lever fully depressed, the forward and rear arms are aligned and set in place thereby holding the jaws in the angled position. When the lever is released or moved back to the original or initial position the forward and rear arms split or become misaligned causing the pulling of the articulation beam proximally to be released and thus the articulation beam is allowed to move distally. Movement of the articulation beam distally causes the upper and lower outer covers and thus the jaws 11, 12 to pivot back to an initial or zero position aligning the jaws to the longitudinal axis 1 of the stapler.
In one embodiment, the articulation barrel includes a bias component, e.g., an articulation barrel spring 56, surrounding the articulation barrel and positioned between the outer surface of the articulation barrel and the inner surface of the articulation hub. The spring biases the articulation barrel distally that also biases the articulation beam distally and thereby biases the jaws to the initial or zero position.
In accordance with various embodiments, the reverse button (or moving the fire button in the opposite direction) may the pressed at any time while the actuation rod 62 is translating distally. Engaging the reverse button reverses the operation of the stapler and thereby enables the longitudinal movement of the actuation rod back or proximally.
As shown for example in
With the fire or reverse button engaged and the actuation rod rotated, the reverse pawl 26 connected to the movable slide or rack 27 becomes engaged or is engageable with a series of teeth 74 longitudinally disposed along or in the actuation rod 62. With the actuation rod 62 at a distal or distal most position, the teeth 74 become accessible or exposed to the reverse pawl 26.
Actuation or squeezing of the trigger 21 towards the handle base 22 rotates the trigger action gear 24 that rotates the intermediate action gear 23 which translates the rack 27 proximally. The reverse pawl 26 connected to the rack 27 also moves proximally and longitudinally. The reverse pawl 26 also being engaged with a tooth of the teeth 74 on the actuation rod 62 also moves the actuation rod 62 proximally and longitudinally.
Releasing of the trigger or moving it away from the handle base 22 causes the reverse pawl 26 and the rack to move back distally through the interaction and cooperation of the trigger and intermediate action gears. However, the tip or tooth of the reverse pawl 26 becomes operationally engage with a more distal portion of the series of teeth 74 longitudinally disposed along the actuation rod 62. Additionally, the engagement of the reverse pawl with the teeth 74 prevents or resists distal movement of the actuation rod 62. As such, multiple strokes or squeezing and releasing of the trigger may be performed to fully move the actuation rod 62 back to or nearly back to its initial or proximal most position and thereby fully open the jaws. Such strokes in one embodiment incrementally open the jaws and thus allow disengagement of the stapler from the stapled tissue. In one embodiment, only a single stroke is utilized to completely open the jaws. In various embodiments, actuation (e.g., closing/opening of the jaws and/or firing of the staples) or articulation of the stapler is assisted by one or more motors.
The forward proximal and distal pawls 28, 25 slide distally and proximally on an outer surface of the actuation rod 62 as the trigger is squeezed and released and as the rack moves proximally and distally. As such, multiple strokes or squeezing and releasing of the trigger may be performed to fully move the actuation rod 62 back to or nearly back to its initial or proximal most position and to place or position the forward proximal and distal pawls 28, 25 back to or nearly back to their initial position relative to the actuation rod 62 (e.g., the forward proximal pawl 28 engaging cut-out 72 and the forward distal pawl 25 engaging cut-out 71). The actuator at its end of its reverse travel is shown for example in
In accordance with various embodiments, the jaws 11, 12 when closed and the elongate shaft defines an outer diameter that is at least as equal to or smaller than the inner diameter of the trocar cannula. A typical surgical procedure may include a single site surgical access device or multiple trocar cannulas placed on and through the patient's body. In one particular embodiment, the inner diameter of the trocar cannula corresponds to 12 mm and the make-up or components of the jaws includes upper and lower jaws, pushers, staples, cartridge, and a jaw gap height. The cartridge is a nest for the pushers and staples and in one embodiment the cartridge is fixed inside the lower jaw. Pushers reside below the staplers and push the staples fully out of cartridge pockets within the cartridge when the pushers are acted upon by a slider. When the staples are pushed out of the cartridge, the staples must pass through the tissue and deform by contact into their corresponding anvil pockets within the anvil on the upper jaw. The actuation beam is a high stress component as it performs the work of closing the hinged upper jaw while compressing tissue therebetween, deploying the pushers to fire the staples and cutting the tissue at the center of the jaws.
In accordance with various embodiments, e.g., a 3.5 mm stapler STR, the staples have a height of approximately 0.140 inches and the pusher is about ⅔ of the staple height to fully deploy the stapes out of the cartridge. For such a staple, the jaw gap height between the upper and lower jaws is about 0.036 inches.
In the illustrated embodiment, the lower jaw has a thickness of 0.030 inches in order to remain rigid when the jaws are clamped on tissue. The lower jaw has an increased strength in the vertical direction as the side wall bends and wraps around and up the side of the cartridge. The upper jaw is generally a flat piece of metal that can be susceptible to bending when clamped on tissue and thus is thick.
Overall, the dimensions of all the components inside the cross section of the distal portion of the STR can be altered slightly, but usually only slightly. It is thus a significant challenge to add additional functionality to the distal portion of the STR while working under these space restrictions and maintaining functionality/reliability.
Generally, the laparoscopic linear cutting surgical stapler comprises a series of opposing ramps at low angles to uniformly lift the staple cartridge and lock it in place. One set of ramps remains stationary while the second set is moved longitudinally relative to the stationary set of ramps driving the surfaces of the ramps to slide against each other. The series of ramps are located along the length of the cartridge and the interaction of ramps causes the cartridge to lift uniformly. The cartridge contains staples, pushers and a slider.
In an initial or default position, e.g., as shipped, the cartridge is at its lowest positional height and thus the largest gap distance between the jaws. In this initial configuration, the jaws of the stapler can freely open and close to grasp tissue therebetween while being gentle on the tissue. The jaws can also thus be gently positioned on the tissue and the tissue positioned into the desired firing position or location. Once the user has found the desired firing location, the cartridge lift is engaged or activated. In one embodiment, the cartridge lift is engaged automatically during the initial firing stroke to fire or eject the staples from the cartridge. By engaging the cartridge lift, the lift is moved longitudinally and an interaction of ramps on the lift and a rampway or retainer and the biased lift apply a vertical lifting force on the cartridge moving the cartridge vertically towards the anvil and delivering a pre-determined pressure on the tissue between the jaws.
The clamping force between the jaws, cartridge, and ramps is directed in a direction perpendicular to the longitudinal axis of the stapler. The force also presses the two sets of ramps together. Due to the low angle of the ramp surfaces with respect to each other and also largely slanting perpendicular to the force, the clamping force or reaction force or pressure is unable to drive the ramps and thus the lift back longitudinally back into its initial position. In accordance with various embodiments, even with the addition of high forces encountered during the staple firing/forming which is also in the same perpendicular direction or even unexpected high pressure forces, the ramps and other components will deform rather than move longitudinally back. The cartridge lift is thus able to lift the cartridge to an infinite number of intermediate heights between the lowest and highest points rather than set incremental points while simultaneously locking or preventing the cartridge from returning back down. This can also be done automatically, e.g., with no user interaction to set or determine a particular height and to adjust or set the stapler to that determined height.
In accordance with various embodiments, the ramps on the cartridge lift and the rampway have the same dimension and shape. In various embodiments, the ramps have different dimensions or shapes and the slope of the ramps defines or accounts for the compressive forces applied to tissue grasped between the jaws 11, 12. In accordance with various embodiments, the rampway 80 is built into or incorporated into the retainer or lower jaw 12 as shown for example in
The movable set of ramps is connected to a pre-loaded spring designed to apply the desired longitudinal force once released or engaged. The spring is also provided to apply a load on the ramps thereby moving the cartridge vertically to achieve a desired predetermined and optimal pressure on the tissue to produce the desired staple formation with minimal excessive pressure or trauma to the tissue and surrounding tissue.
By placing the biasing member or spring within the shaft or distally away from the jaws, allows for a larger biasing member (e.g., a spring without space constraints imposed by a jaw or jaws of the stapler), provides easier manufacturing, removes space constraints at the jaws and allows for a single force to be spread out and uniformly applied at the jaws. Such biasing members in the jaws are often impractical or inoperable as not effectively applying uniform forces against the cartridge to compress the tissue against the anvil. Appropriate compression of tissue and jaw gap height ensures proper staple formation. Proper staple formation ensures no leaking and reduced trauma to the tissue.
In accordance with various embodiments, the surgical stapler applies compression forces at three different intervals. The first compression can occur when the jaws are closed onto the tissue. The second compression occurs when the vertical adjustment driver is activated and the third compression occurs when the firing mechanism applies pressure on both jaws. By spreading out or sequencing the compression intervals, the tissue is allowed to compress further and resist less to the compression and thereby provide optimal staple formation and reduced tissue trauma.
The movable wedges can be biased by a cable or motors driven by pressure sensors. The stapler is a single use disposable device and as such the lift mechanism once initiated cannot be reset and thus the lift mechanism cannot be reused along with the associated cartridge. In accordance with various embodiments, the lift mechanism can be provided using ramps or wedges on the bottom of the cartridge, along the sides of the cartridge; ramps as separate inserts assembled or integrated in lower jaw or cartridge; and/or angled slots or channels instead of or in addition to wedges. In accordance with various embodiments, the cartridge lift could be biased distally instead of proximally to lift the cartridge and thus the direction or slope of the ramps would also be reversed. In accordance with various embodiments, a separate lockout or lift restraint is provided such as teeth or a ratchet like mechanisms on the cartridge lift, cartridge, lift barrel, lift beam or the like that provides only a one-way proximal or distal longitudinal and incremental movement of the cartridge lift or staple cartridge.
In various embodiments, a retainer includes a plurality of ramps that interact with a cartridge lift that is movable longitudinally and proximally and lifts the cartridge vertically. The cartridge lift in various embodiments has no ramps with smooth flat upper and lower surfaces but is attached to a ramp or protrusion like configuration and interaction as described throughout the description. In various embodiments, for example, as shown in
In a fire activation configuration, the actuation beam is moved distally and thus allows the movement of the extended base and the release of the spring to apply a spring force against the cartridge lift. As such, the spring moves the cartridge lift distally causing the cartridge to lift up or move only vertically and self-adjust to the tissue in the jaws.
In various embodiments, as shown for example in
In various embodiments, as shown for example in
In various embodiments, the cartridge lift is connected to a flexible pull cable, e.g., cable 714. The flexible pull cable includes a hold/release block 715 coupled to a tension spring 716. The flexibility of the pull cable assists in flexing or articulating of the jaws relative to the elongate shaft (e.g., at a flex point or joint denoted abstractly by curved line 701). The tension spring biases the cartridge lift proximally. The hold/release block limits or restricts movement of the pull cable and likewise the cartridge lift. Once activated, the hold/release block is released allowing the pull cable and the cartridge lift to be pulled proximally. As the cartridge lift is moved proximally, the cartridge moves vertically towards the upper jaw 11. In various embodiments, the cartridge is seated on the cartridge platform and as such the cartridge and cartridge platform only moves vertically or in a direction traverse to the longitudinal movement of the cartridge lift. In various embodiments, the cartridge and cartridge platform are integrated to form a monolithic structure.
In various embodiments, as shown for example in
In various embodiments, as shown for example in
In accordance with various embodiments, an actuation beam provides functional parallel jaws during closure, compression and high forces of staple firing/forming. As such, the actuation beam closes the jaws and maintains consistent parallel closure along the length of the jaw and in various embodiments the actuation beam is arranged to withstand significant firing/closure forces at a pre-determined height (height at which the actuation beam was manufactured). The actuation beam structural member is thus made from high grade stainless steels for example and thus strong and rigid. Making or providing an adjustable actuation beam can sacrifice or reduce inherent strength and rigidity of actuation beam.
In various embodiments, an adjustable actuation beam can provide an adjustable jaw gap and/or a low or reduced overall outer or body diameter. In various embodiments, such an adjustable actuation beam can cause width constraints, complex construction, e.g., actuation beam or jaw mechanisms, and/or reduce actuation beam strength.
In various embodiments, the actuation beam closes the top jaw to the bottom jaw when it is advanced. The actuation beam closes the jaws together at a fixed height or jaw gap. If the actuation beam was able to be adjusted in height, the user could then adjust the jaw gap appropriately for the desired tissue to use it on. In accordance with various embodiments, adjustable actuation beams 1800 are illustrated for example in
However such an adjustable actuation beam may still need to provide sufficient strength in order to close the jaw especially if the tissue between the jaws is thick. The adjustable actuation beam may also be very thin to leave room for multiple rows of staples in the cartridge. The jaws may also need to stay parallel to the cartridge during firing. As such, a mechanism may be needed to allow one or both of the jaws to realign the gap to match the adjustable actuation beam. The actuation beam may also need to be acted on by a separate biasing component or mechanism to adjust the height. The additional biasing component or mechanism may also have to articulate. The pivot joint between the top and bottom jaws may also have to adjust accordingly to match the actuation beam to maintain parallel jaws.
The ramp configuration as previously described in accordance with various embodiments as compared to the adjustable actuation beam embodiments may have fewer parts. The ramp configuration for example has a single location jaw pivot pin with a thin and simple or straight-forward actuation beam.
In various embodiments, for example, as shown in
As shown in
In
As illustrated in
The adjustable top jaw with an actuation beam 18 is similar to previously described embodiments. The actuation beam height remains the same height during use however the difference in staple heights is accommodated by a small shoe or spacer that resides in the top jaw or the lower jaw assembly. For example, if a small jaw gap is desired, a spacer would be added while if a large jaw gap is desired, the spacer would not be used. The decision to add a spacer may be left with the user. The engagement of the spacer as desired may be activated by the actuation beam or similar mechanisms used in the firing or pre-firing process. Such mechanism may also have to articulate. The top or bottom jaw may need to be thinner to provide space for the spacer which can reduce the jaws strength. The spacer's strength may also be enhanced to accommodate the reduced jaw strength and to withstand compressive forces in the staple formation process. A space may also be provided to accommodate storage of the spacer when not in use.
Relative to the various other embodiments previously described, the top jaw would likely be thicker in cross section. A strong top jaw that minimizes flexing is often desired for proper staple formation. As such, a single monolithic top jaw is often desired. The spacer provides a finite number of gap height changes and is not automatically-adjustable.
In accordance with various embodiments, an adjustable top jaw can provide an adjustable and comparable jaw gap and an overall low body diameter. However, the adjustable top jaw could also increase space between staple lines, increase complexity to the actuation beam or other components and/or reduce the top jaw strength.
In accordance with various embodiments, the cartridge is adjusted using springs or other similar biasing mechanisms. Such embodiments however can be difficult to lock the cartridge in place once an optimum spacing has been reached. For example, springs under the cartridge allows the cartridge to move or adjust due to the thickness of tissue. However, the cartridge would move again due to higher forces encountered during staple firing and forming. As such, the cartridge moves freely in response to the tissue thickness but may not be able to lock solidly in place once the optimum height has been found and all within the limited space of a linear laparoscopic cutting cartridge.
Referring to
In accordance with various embodiments, an adjustable top/bottom jaw is provided without the use of an actuation beam. Other mechanisms to open and close the jaws could provide parallel jaws during closing and staple formation and counteract or account for compressive forces encountered during closing and staple formation. Such mechanism may thus be thicker and stronger that may reduce the ability to articulate or space availability to accommodate the space limitations in laparoscopic procedures.
The top jaw would have to be much thicker than a normal jaw due to the lack of an actuation beam. The cartridge would need to house the cutting blade and protect it after the device is fired and the jaw opened.
In accordance with various embodiments, one or more ramps are placed along the sides of a cartridge or cartridge lift interacting with ramps on the sides of a rampway, retainer or lower jaw. An actuation beam is provided to close the jaw, fire the staples, release jaw gap spring, and cut the tissue. The jaw gap is set by the side ramps and in one embodiment the cartridge is held in place by a frame that is acted on by the cartridge lift. When the cartridge lift is activated, the frame and cartridge close the gap based on a biasing member, e.g., a spring and its spring rate, that has be predefined or predetermined to be optimal for tissue compression. The jaw gap change is done automatically.
In such embodiments, compressive forces are transmitted to the sides of the cartridge or cartridge lift rather than being distributed on a bottom flat surface as provided in various other embodiments previously described. Such side distribution may reduce the ability to accommodate such forces for proper staple formation or may require thicker or stronger wedges or sides of such components to account for the encountered forces. In accordance with various embodiments, side ramps can provide an adjustable and comparable jaw gap and an overall low body diameter. However, the side ramps may encounter width constraints. In various embodiments, the stapler includes a separate user-accessible switch or button to initiate, unlock or activate the biasing of the cartridge lift or the lift lock. In various embodiments, the separate switch may only become accessible once firing of the staples has activated or unlocked. The biasing of the cartridge in various embodiments may be by performed by one or more springs, elastic bands, cables, magnets, hydraulics or other similar biasing systems. The cartridge lift, biasing systems or both in various embodiments may be assisted by motors and/or sensors. In various embodiments, the lift lock cannot be relocked or the biasing systems reset or placed back to its initial position.
Additionally, although this application discloses certain embodiments and examples, it will be understood by those skilled in the art that the present inventions extend beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. Further, the various features of these inventions can be used alone, or in combination with other features of these inventions other than as expressly described above. As such, it should be appreciated that although specific combinations of embodiments and features or aspects of various embodiments may not be explicitly described such combinations however are contemplated and within the scope of the present inventions. Thus, it is intended that the scope of the present inventions herein disclosed should not be limited by the particular disclosed embodiments described above.
Decker, Steven E., Becerra, Matthew M., Patel, Atal C., Hopkins, Timothy M., Jasemian, Babak D.
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| 7455208, | Feb 18 2005 | Ethicon Endo-Surgery, Inc. | Surgical instrument with articulating shaft with rigid firing bar supports |
| 7455676, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7461767, | Jun 03 2005 | Covidien LP | Battery powered surgical instrument |
| 7464846, | Jan 31 2006 | Ethicon Endo-Surgery, Inc | Surgical instrument having a removable battery |
| 7464847, | Jun 03 2005 | Covidien LP | Surgical stapler with timer and feedback display |
| 7464849, | Jan 31 2006 | Ethicon Endo-Surgery, Inc | Electro-mechanical surgical instrument with closure system and anvil alignment components |
| 7467740, | Sep 21 2005 | Ethicon Endo-Surgery, Inc | Surgical stapling instruments having flexible channel and anvil features for adjustable staple heights |
| 7472814, | Aug 28 1995 | Tyco Healthcare Group LP | Surgical stapler |
| 7472815, | Sep 21 2005 | Ethicon Endo-Surgery, Inc | Surgical stapling instruments with collapsible features for controlling staple height |
| 7472816, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7481348, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 7481349, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7487899, | Jul 28 2004 | Cilag GmbH International | Surgical instrument incorporating EAP complete firing system lockout mechanism |
| 7490749, | Mar 28 2007 | Cilag GmbH International | Surgical stapling and cutting instrument with manually retractable firing member |
| 7506790, | Jul 28 2004 | Cilag GmbH International | Surgical instrument incorporating an electrically actuated articulation mechanism |
| 7506791, | Sep 29 2006 | Ethicon Endo-Surgery, Inc | Surgical stapling instrument with mechanical mechanism for limiting maximum tissue compression |
| 7513408, | Jul 28 2004 | Cilag GmbH International | Multiple firing stroke surgical instrument incorporating electroactive polymer anti-backup mechanism |
| 7530484, | Oct 30 2003 | Single cartridge surgical stapler | |
| 7543730, | Jun 24 2008 | Covidien LP | Segmented drive member for surgical instruments |
| 7543731, | Oct 18 1991 | United States Surgical Corporation | Surgical stapling apparatus |
| 7546940, | Mar 23 2005 | Covidien LP | Pivoting anvil assembly for surgical stapling device |
| 7549564, | Jun 22 2007 | Cilag GmbH International | Surgical stapling instrument with an articulating end effector |
| 7552854, | May 19 2006 | Applied Medical Resources Corporation | Surgical stapler with firing lock mechanism |
| 7556186, | Oct 17 2003 | Covidien LP | Surgical stapling device having trigger lock and associated lockout mechanism |
| 7565993, | Sep 23 1997 | United States Surgical Corporation | Surgical stapling apparatus |
| 7568604, | Oct 13 2000 | Covidien LP | Surgical fastener applying apparatus |
| 7588174, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staples sizes |
| 7588175, | Jun 18 2007 | Cilag GmbH International | Surgical stapling and cutting instrument with improved firing system |
| 7588177, | Oct 04 2002 | Covidien LP | Tool assembly for surgical stapling device |
| 7604151, | Jun 29 2007 | Cilag GmbH International | Surgical stapling systems and staple cartridges for deploying surgical staples with tissue compression features |
| 7611038, | Oct 20 2000 | Covidien LP | Directionally biased staple and anvil assembly for forming the staple |
| 7617961, | Oct 04 2002 | Covidien LP | Tool assembly for surgical stapling device |
| 7624902, | Aug 31 2007 | Covidien LP | Surgical stapling apparatus |
| 7631793, | Mar 19 2002 | Covidien LP | Surgical fastener applying apparatus |
| 7635074, | Oct 04 2005 | Covidien LP | Staple drive assembly |
| 7637409, | Mar 15 2007 | Covidien LP | Powered surgical stapling device |
| 7637410, | Oct 06 2006 | Covidien LP | Surgical instrument including a locking assembly |
| 7641091, | Oct 04 2005 | Covidien LP | Staple drive assembly |
| 7641093, | May 20 2003 | Cilag GmbH International | Surgical stapling instrument having an electroactive polymer actuated single lockout mechanism for prevention of firing |
| 7641095, | Dec 21 2006 | Covidien LP | Staple driver for articulating surgical stapler |
| 7644848, | Jan 31 2006 | Ethicon Endo-Surgery, Inc | Electronic lockouts and surgical instrument including same |
| 7648055, | Mar 15 2007 | Covidien LP | Surgical stapling apparatus with powered articulation |
| 7651017, | Nov 23 2005 | Ethicon Endo-Surgery, Inc. | Surgical stapler with a bendable end effector |
| 7654431, | Feb 18 2005 | Ethicon Endo-Surgery, Inc. | Surgical instrument with guided laterally moving articulation member |
| 7658311, | Jun 22 2007 | Cilag GmbH International | Surgical stapling instrument with a geared return mechanism |
| 7665647, | Sep 29 2006 | Ethicon Endo-Surgery, Inc | Surgical cutting and stapling device with closure apparatus for limiting maximum tissue compression force |
| 7669746, | Aug 31 2005 | Cilag GmbH International | Staple cartridges for forming staples having differing formed staple heights |
| 7670334, | Jan 10 2006 | Ethicon Endo-Surgery, Inc. | Surgical instrument having an articulating end effector |
| 7673781, | Aug 31 2005 | Cilag GmbH International | Surgical stapling device with staple driver that supports multiple wire diameter staples |
| 7682367, | Feb 28 2007 | Covidien LP | Surgical stapling apparatus |
| 7690547, | Mar 30 2005 | Covidien LP | Tool assembly for a surgical stapling device |
| 7703653, | Sep 28 2007 | Covidien LP | Articulation mechanism for surgical instrument |
| 7717312, | Jun 03 2005 | Covidien LP | Surgical instruments employing sensors |
| 7721931, | Jan 10 2007 | Cilag GmbH International | Prevention of cartridge reuse in a surgical instrument |
| 7721933, | Oct 13 2000 | Covidien LP | Surgical fastener applying apparatus |
| 7721935, | Jun 17 2003 | Covidien LP | Surgical stapling device |
| 7721936, | Jan 10 2007 | Cilag GmbH International | Interlock and surgical instrument including same |
| 7726538, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7726539, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7731073, | May 19 2006 | Applied Medical Resources Corporation | Surgical stapler with firing lock mechanism |
| 7735703, | Jun 29 2007 | Cilag GmbH International | Re-loadable surgical stapling instrument |
| 7753245, | Jun 22 2007 | Cilag GmbH International | Surgical stapling instruments |
| 7753246, | Jan 31 2007 | Covidien LP | Surgical instrument with replaceable loading unit |
| 7757925, | Jun 03 2005 | Covidien LP | Battery powered surgical instrument |
| 7766210, | Jan 31 2006 | Ethicon Endo-Surgery, Inc | Motor-driven surgical cutting and fastening instrument with user feedback system |
| 7770774, | Aug 28 1995 | Covidien LP | Surgical stapler |
| 7780054, | Feb 18 2005 | Ethicon Endo-Surgery, Inc | Surgical instrument with laterally moved shaft actuator coupled to pivoting articulation joint |
| 7780055, | Apr 06 2005 | Covidien LP | Loading unit having drive assembly locking mechanism |
| 7784662, | Feb 18 2005 | Ethicon Endo-Surgery, Inc. | Surgical instrument with articulating shaft with single pivot closure and double pivot frame ground |
| 7784663, | Mar 17 2005 | Cilag GmbH International | Surgical stapling instrument having load sensing control circuitry |
| 7793812, | Feb 14 2008 | Cilag GmbH International | Disposable motor-driven loading unit for use with a surgical cutting and stapling apparatus |
| 7798386, | May 30 2007 | Cilag GmbH International | Surgical instrument articulation joint cover |
| 7810693, | May 30 2007 | Cilag GmbH International | Surgical stapling and cutting instrument with articulatable end effector |
| 7815090, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 7815091, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 7819298, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus with control features operable with one hand |
| 7819896, | Nov 04 2002 | Covidien LP | Tool assembly for a surgical stapling device |
| 7823760, | May 01 2007 | Covidien LP | Powered surgical stapling device platform |
| 7828188, | Apr 11 2002 | Covidien LP | Surgical stapling apparatus including an anvil and cartridge each having cooperating mating surfaces |
| 7828189, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7837079, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7837081, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 7845534, | Jun 03 2005 | Covidien LP | Surgical stapler with timer and feedback display |
| 7845535, | Oct 06 2006 | Covidien LP | Surgical instrument having a plastic surface |
| 7845537, | Jan 31 2006 | Cilag GmbH International | Surgical instrument having recording capabilities |
| 7857184, | Mar 28 2005 | Covidien LP | Tool assembly for surgical stapling device |
| 7857185, | Feb 14 2008 | Cilag GmbH International | Disposable loading unit for surgical stapling apparatus |
| 7857187, | Oct 17 2003 | Covidien LP | Surgical stapler with tiltable anvil assembly |
| 7861906, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus with articulatable components |
| 7866525, | Oct 06 2006 | Covidien LP | Surgical instrument having a plastic surface |
| 7866527, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus with interlockable firing system |
| 7891534, | Oct 05 2001 | Covidien LP | Surgical stapling device |
| 7905381, | Sep 19 2008 | Cilag GmbH International | Surgical stapling instrument with cutting member arrangement |
| 7909220, | Oct 05 2007 | Covidien LP | Surgical stapler having an articulation mechanism |
| 7909221, | Jun 03 2005 | Covidien LP | Battery powered surgical instrument |
| 7913891, | Feb 14 2008 | Cilag GmbH International | Disposable loading unit with user feedback features and surgical instrument for use therewith |
| 7914543, | Oct 14 2003 | Ethicon Endo-Surgery, Inc | Single fold device for tissue fixation |
| 7918230, | Sep 21 2007 | Covidien LP | Surgical device having a rotatable jaw portion |
| 7918376, | Mar 09 2009 | TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO , LTD | Articulated surgical instrument |
| 7918377, | Oct 16 2008 | Cilag GmbH International | Surgical stapling instrument with apparatus for providing anvil position feedback |
| 7922063, | Oct 31 2007 | Covidien LP | Powered surgical instrument |
| 7934628, | Oct 05 2001 | Covidien LP | Surgical stapling device |
| 7934629, | May 19 2006 | Applied Medical Resources Corporation | Surgical stapler with firing lock mechanism |
| 7934630, | Aug 31 2005 | Cilag GmbH International | Staple cartridges for forming staples having differing formed staple heights |
| 7942300, | Apr 22 2005 | Covidien LP | Surgical fastener applying apparatus |
| 7954685, | Nov 06 2007 | Covidien LP | Articulation and firing force mechanisms |
| 7954686, | Sep 19 2008 | Cilag GmbH International | Surgical stapler with apparatus for adjusting staple height |
| 7959050, | Jul 25 2005 | Cilag GmbH International | Electrically self-powered surgical instrument with manual release |
| 7963433, | Sep 21 2007 | Covidien LP | Surgical device having multiple drivers |
| 7992758, | Sep 21 2007 | Covidien LP | Surgical device having a rotatable jaw portion |
| 8002795, | Jun 03 2005 | Covidien LP | Surgical instruments employing sensors |
| 8006887, | Mar 15 2007 | Covidien LP | Surgical stapling apparatus with powered articulation |
| 8007513, | Jun 12 2008 | Cilag GmbH International | Partially reusable surgical stapler |
| 8008598, | Jul 27 2005 | Covidien LP | Method for forming staple pockets of a surgical stapler |
| 8011550, | Mar 31 2009 | Covidien LP | Surgical stapling apparatus |
| 8011553, | Aug 28 1995 | Tyco Healthcare Group LP | Surgical stapler |
| 8012170, | Apr 27 2009 | Covidien LP | Device and method for controlling compression of tissue |
| 8016178, | Mar 31 2009 | Covidien LP | Surgical stapling apparatus |
| 8020742, | Mar 15 2007 | Covidien LP | Powered surgical stapling device |
| 8020743, | Oct 15 2008 | Cilag GmbH International | Powered articulatable surgical cutting and fastening instrument with flexible drive member |
| 8028885, | May 19 2006 | Cilag GmbH International | Electric surgical instrument with optimized power supply and drive |
| 8033438, | Oct 14 2005 | Covidien LP | Surgical stapling device |
| 8033440, | Oct 05 2001 | Covidien LP | Surgical stapling device |
| 8033441, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 8033442, | Nov 04 2002 | Covidien LP | Tool assembly for a surgical stapling device |
| 8034077, | Jul 26 2005 | Cilag GmbH International | Method for surgical stapling and cutting device with dual actuating control knob |
| 8038046, | May 19 2006 | Cilag GmbH International | Electrical surgical instrument with optimized power supply and drive |
| 8052024, | Jun 03 2005 | Covidien LP | Surgical stapler with timer and feedback display |
| 8056788, | Aug 28 1995 | Tyco Healthcare Group LP | Surgical stapler |
| 8061576, | Aug 31 2007 | Covidien LP | Surgical instrument |
| 8061577, | Oct 04 2002 | Covidien LP | Tool assembly for a surgical stapling device |
| 8070033, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8070034, | May 29 2009 | TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO , LTD | Surgical stapler with angled staple bays |
| 8070035, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 8070036, | Sep 06 2007 | TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO , LTD | True multi-fire surgical stapler configured to fire staples of different sizes |
| 8074861, | Oct 13 2000 | Covidien LP | Surgical fastener applying apparatus |
| 8083118, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8087563, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8091753, | Oct 04 2002 | Covidien LP | Surgical stapling device |
| 8091754, | Oct 13 2000 | Covidien LP | Surgical fastener applying apparatus |
| 8092493, | Mar 15 2007 | Covidien LP | Surgical stapling apparatus with powered articulation |
| 8100309, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 8113406, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 8113407, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staples sizes |
| 8113408, | Oct 05 2001 | Covidien LP | Surgical stapling device |
| 8113410, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus with control features |
| 8118207, | Jun 17 2003 | Covidien LP | Surgical stapling device |
| 8123100, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 8127976, | May 08 2009 | Covidien LP | Stapler cartridge and channel interlock |
| 8136712, | Dec 10 2009 | Cilag GmbH International | Surgical stapler with discrete staple height adjustment and tactile feedback |
| 8152041, | Oct 14 2009 | Covidien LP | Varying tissue compression aided by elastic members |
| 8157145, | May 31 2007 | Cilag GmbH International | Pneumatically powered surgical cutting and fastening instrument with electrical feedback |
| 8157150, | Jun 03 2005 | Covidien LP | Surgical stapler with timer and feedback display |
| 8157152, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staples sizes |
| 8181839, | Jun 03 2005 | Covidien LP | Surgical instruments employing sensors |
| 8186555, | Jan 31 2006 | Cilag GmbH International | Motor-driven surgical cutting and fastening instrument with mechanical closure system |
| 8186556, | May 09 2008 | Covidien LP | Variable compression surgical fastener apparatus |
| 8186560, | Jun 29 2007 | Cilag GmbH International | Surgical stapling systems and staple cartridges for deploying surgical staples with tissue compression features |
| 8191752, | Oct 06 2006 | Covidien LP | Surgical instrument having a plastic surface |
| 8196795, | Feb 14 2008 | Cilag GmbH International | Disposable motor-driven loading unit for use with a surgical cutting and stapling apparatus |
| 8201721, | Oct 31 2007 | Covidien LP | Powered surgical instrument |
| 8205619, | Sep 28 2007 | Covidien LP | Method of preventing articulation in a surgical instrument |
| 8205780, | Mar 22 2007 | Covidien LP | Apparatus for forming variable height surgical fasteners |
| 8205781, | Sep 19 2008 | Cilag GmbH International | Surgical stapler with apparatus for adjusting staple height |
| 8210411, | Sep 23 2008 | Cilag GmbH International | Motor-driven surgical cutting instrument |
| 8210416, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8220688, | Dec 24 2009 | Cilag GmbH International | Motor-driven surgical cutting instrument with electric actuator directional control assembly |
| 8225979, | Oct 30 2009 | Covidien LP | Locking shipping wedge |
| 8231040, | Apr 14 2008 | Covidien LP | Variable compression surgical fastener cartridge |
| 8231041, | Apr 14 2008 | Covidien LP | Variable compression surgical fastener cartridge |
| 8235274, | Aug 31 2007 | Covidien LP | Surgical instrument |
| 8236010, | Mar 23 2006 | Cilag GmbH International | Surgical fastener and cutter with mimicking end effector |
| 8240536, | Mar 15 2007 | Covidien LP | Powered surgical stapling device |
| 8240537, | Mar 15 2007 | Covidien LP | Surgical stapling apparatus with powered articulation |
| 8241322, | Jul 27 2005 | Covidien LP | Surgical device |
| 8245898, | Jul 26 2005 | Cilag GmbH International | Surgical stapling and cutting device |
| 8245899, | Feb 06 2009 | Cilag GmbH International | Driven surgical stapler improvements |
| 8245900, | Oct 06 2006 | Covidien LP | Surgical instrument having a plastic surface |
| 8256656, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8272552, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 8272554, | Sep 21 2007 | Covidien LP | Surgical device having multiple drivers |
| 8281972, | May 19 2006 | Applied Medical Resources Corporation | Surgical stapler with firing lock mechanism |
| 8281973, | Oct 05 2001 | Covidien LP | Surgical stapling device |
| 8286846, | May 19 2006 | Cilag GmbH International | Method for operating an electrical surgical instrument with optimal tissue compression |
| 8292146, | Aug 15 2005 | Covidien LP | Surgical stapling instruments including a cartridge having multiple staple sizes |
| 8292148, | Nov 06 2007 | Covidien LP | Articulation and firing force mechanisms |
| 8292151, | Oct 04 2002 | Covidien LP | Tool assembly for surgical stapling device |
| 8292152, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8292153, | Apr 11 2002 | Covidien LP | Surgical stapling apparatus including an anvil and cartridge each having cooperating mating surfaces |
| 8292157, | Feb 12 2007 | Cilag GmbH International | Electrical surgical instrument with optimized power supply and drive |
| 8308041, | Nov 10 2010 | Covidien LP | Staple formed over the wire wound closure procedure |
| 8308043, | May 19 2009 | Covidien LP | Recognition of interchangeable component of a device |
| 8317070, | Aug 31 2005 | Cilag GmbH International | Surgical stapling devices that produce formed staples having different lengths |
| 8322455, | Jun 27 2006 | Cilag GmbH International | Manually driven surgical cutting and fastening instrument |
| 8336754, | Feb 04 2011 | Covidien LP | Locking articulation mechanism for surgical stapler |
| 8342377, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus |
| 8342378, | Aug 17 2009 | Covidien LP | One handed stapler |
| 8342379, | Sep 21 2007 | Covidien LP | Surgical device having multiple drivers |
| 8342380, | May 09 2008 | Covidien LP | Variable compression surgical fastener apparatus |
| 8348125, | Jun 03 2005 | Covidien LP | Battery powered surgical instrument |
| 8348129, | Oct 09 2009 | Cilag GmbH International | Surgical stapler having a closure mechanism |
| 8348131, | Sep 29 2006 | Ethicon Endo-Surgery, Inc | Surgical stapling instrument with mechanical indicator to show levels of tissue compression |
| 8353440, | Sep 21 2007 | Covidien LP | Surgical device having a rotatable jaw portion |
| 8360297, | Sep 29 2006 | Ethicon Endo-Surgery, Inc | Surgical cutting and stapling instrument with self adjusting anvil |
| 8360299, | Aug 11 2009 | Covidien LP | Surgical stapling apparatus |
| 8393513, | Apr 11 2002 | Covidien LP | Surgical stapling apparatus including an anvil and cartridge each having cooperating mating surfaces |
| 8397973, | Mar 09 2009 | Aesculap AG | Wide handle for true multi-fire surgical stapler |
| 8403198, | Mar 22 2007 | Covidien LP | Apparatus for forming variable height surgical fasteners |
| 8413868, | Aug 31 2007 | Covidien LP | Surgical instrument |
| 8414577, | Feb 05 2009 | Cilag GmbH International | Surgical instruments and components for use in sterile environments |
| 8418906, | Oct 30 2009 | Covidien LP | Locking shipping wedge |
| 8418907, | Nov 05 2009 | Covidien LP | Surgical stapler having cartridge with adjustable cam mechanism |
| 8418908, | Oct 26 2011 | Covidien LP | Staple feeding and forming apparatus |
| 8419768, | Mar 15 2007 | Covidien LP | Surgical stapling apparatus with powered articulation |
| 8439246, | Jul 20 2010 | TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO , LTD | Surgical stapler with cartridge-adjustable clamp gap |
| 8444036, | Feb 06 2009 | Cilag GmbH International | Motor driven surgical fastener device with mechanisms for adjusting a tissue gap within the end effector |
| 8453907, | Feb 06 2009 | Cilag GmbH International | Motor driven surgical fastener device with cutting member reversing mechanism |
| 8453912, | Aug 28 1995 | Covidien LP | Surgical stapler |
| 8453913, | Feb 06 2009 | Covidien LP | Anvil for surgical stapler |
| 8459520, | Jan 10 2007 | Cilag GmbH International | Surgical instrument with wireless communication between control unit and remote sensor |
| 8459522, | Mar 15 2007 | Covidien LP | Powered surgical stapling device |
| 8464922, | May 09 2008 | Covidien LP | Variable compression surgical fastener cartridge |
| 8469252, | Jan 26 2009 | Ethicon Endo-Surgery, Inc | Surgical stapler fastening device with adjustable anvil |
| 8479967, | Apr 09 2007 | Covidien LP | Surgical stapling apparatus with powered retraction |
| 8496152, | Nov 06 2007 | Covidien LP | Articulation and firing force mechanisms |
| 8496155, | May 29 2009 | TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO , LTD | Surgical stapler with angled feeder belts |
| 8496156, | Apr 22 2008 | Covidien LP | Cartridge for applying varying amounts of tissue compression |
| 8496683, | Jun 27 2007 | Covidien LP | Buttress and surgical stapling apparatus |
| 8505799, | Jun 03 2005 | Covidien LP | Battery powered surgical instrument |
| 8505801, | Oct 13 2000 | Covidien LP | Surgical fastener applying apparatus |
| 8517239, | Feb 05 2009 | Cilag GmbH International | Surgical stapling instrument comprising a magnetic element driver |
| 8517240, | Jan 03 2013 | Bolder Surgical, LLC | Medical device and method of use |
| 8523043, | Dec 07 2010 | Immersion Corporation | Surgical stapler having haptic feedback |
| 8540130, | Feb 14 2008 | Cilag GmbH International | Disposable motor-driven loading unit for use with a surgical cutting and stapling apparatus |
| 8540133, | Sep 19 2008 | Cilag GmbH International | Staple cartridge |
| 8540625, | Mar 29 2011 | Olympus Corporation | Endoscope |
| 8544712, | Apr 11 2002 | Covidien LP | Surgical stapling apparatus including an anvil and cartridge each having cooperating mating surfaces |
| 8556151, | Sep 11 2007 | Covidien LP | Articulating joint for surgical instruments |
| 8556152, | Jul 01 2008 | Covidien LP | Retraction mechanism with clutch-less drive for use with a surgical apparatus |
| 8556153, | Jan 06 2010 | Aesculap AG | Stapler cartridge with staples frangibly affixed thereto |
| 8561871, | Dec 31 2009 | Covidien LP | Indicators for surgical staplers |
| 8561874, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 8573459, | May 19 2006 | Cilag GmbH International | Optimal tissue compression electrical surgical instrument |
| 8573460, | Aug 31 2007 | Covidien LP | Surgical instrument |
| 8573462, | May 19 2006 | Cilag GmbH International | Electrical surgical instrument with optimized power supply and drive |
| 8573463, | Mar 31 2011 | Covidien LP | Locking articulation mechanism |
| 8573464, | May 19 2011 | Ethicon Endo-Surgery, Inc | Circular stapling instrument having a breakaway washer attachment member |
| 8579176, | Jul 26 2005 | Cilag GmbH International | Surgical stapling and cutting device and method for using the device |
| 8579177, | Jun 03 2005 | Covidien LP | Surgical instruments employing sensors |
| 8584919, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus with load-sensitive firing mechanism |
| 8584921, | Oct 06 2006 | Covidien LP | Surgical instrument with articulating tool assembly |
| 8596513, | Oct 04 2002 | Covidien LP | Surgical stapler with universal articulation and tissue pre-clamp |
| 8608043, | Oct 06 2006 | Covidien LP | Surgical instrument having a multi-layered drive beam |
| 8608045, | Oct 10 2008 | Cilag GmbH International | Powered surgical cutting and stapling apparatus with manually retractable firing system |
| 8616427, | Oct 04 2002 | Covidien LP | Tool assembly for surgical stapling device |
| 8622274, | Feb 14 2008 | Cilag GmbH International | Motorized cutting and fastening instrument having control circuit for optimizing battery usage |
| 8627992, | Dec 16 2002 | VESTECK, INC | Endovascular stapler |
| 8627993, | May 19 2006 | Ethicon Endo-Surgery, Inc. | Active braking electrical surgical instrument and method for braking such an instrument |
| 8627995, | May 19 2006 | Cilag GmbH International | Electrically self-powered surgical instrument with cryptographic identification of interchangeable part |
| 8631990, | Apr 25 2011 | Aesculap AG | Staple trap for surgical stapler |
| 8632525, | Sep 17 2010 | Cilag GmbH International | Power control arrangements for surgical instruments and batteries |
| 8632535, | Jan 10 2007 | Cilag GmbH International | Interlock and surgical instrument including same |
| 8636189, | Apr 19 2011 | Aesculap AG | Active wedge for surgical stapler |
| 8636190, | Aug 11 2009 | Covidien LP | Surgical stapling apparatus |
| 8636192, | Sep 23 2008 | Covidien LP | Surgical instrument and loading unit for use therewith |
| 8636193, | Jul 27 2005 | Covidien LP | Staple pocket arrangement for surgical stapler |
| 8636762, | Jul 27 2005 | Covidien LP | Surgical device |
| 8636766, | Sep 23 1997 | Covidien LP | Surgical stapling apparatus including sensing mechanism |
| 8657174, | Feb 14 2008 | Cilag GmbH International | Motorized surgical cutting and fastening instrument having handle based power source |
| 8657176, | Sep 30 2010 | Ethicon Endo-Surgery, Inc | Tissue thickness compensator for a surgical stapler |
| 8657178, | Feb 14 2008 | Cilag GmbH International | Surgical stapling apparatus |
| 8672209, | Feb 25 2010 | Design Standards Corporation | Laproscopic stapler |
| 8672951, | Jul 26 2005 | Cilag GmbH International | Electrically self-powered surgical instrument with manual release |
| 8685004, | Apr 13 2007 | Covidien LP | Powered surgical instrument |
| 8695865, | Jul 26 2005 | Cilag GmbH International | Surgical stapling and cutting device |
| 8696665, | Mar 26 2010 | Cilag GmbH International | Surgical cutting and sealing instrument with reduced firing force |
| 8708211, | Feb 12 2009 | Covidien LP | Powered surgical instrument with secondary circuit board |
| 8708213, | Jan 31 2006 | Cilag GmbH International | Surgical instrument having a feedback system |
| 8740034, | Sep 30 2010 | Cilag GmbH International | Surgical stapling instrument with interchangeable staple cartridge arrangements |
| 8740035, | Aug 28 1995 | Covidien LP | Surgical stapler |
| 8740036, | Dec 01 2011 | Covidien LP | Surgical instrument with actuator spring arm |
| 8752748, | Sep 21 2007 | Covidien LP | Surgical device having a rotatable jaw portion |
| 8763876, | Jun 30 2011 | Covidien LP | Surgical instrument and cartridge for use therewith |
| 8770458, | Oct 06 2006 | Covidien LP | Surgical instrument having a plastic surface |
| 8770459, | Oct 17 2003 | Covidien LP | Surgical stapling device with independent tip rotation |
| 8789741, | Sep 24 2010 | Cilag GmbH International | Surgical instrument with trigger assembly for generating multiple actuation motions |
| 8800839, | Jun 03 2005 | Covidien LP | Surgical instruments employing sensors |
| 8800840, | Apr 11 2002 | Covidien LP | Surgical stapling apparatus including an anvil and cartridge each having cooperating mating surfaces |
| 8800841, | Mar 15 2011 | Ethicon Endo-Surgery, Inc | Surgical staple cartridges |
| 8806973, | Dec 02 2009 | Covidien LP | Adapters for use between surgical handle assembly and surgical end effector |
| 8807414, | Oct 06 2006 | Covidien LP | System and method for non-contact electronic articulation sensing |
| 8820603, | Sep 23 2008 | Cilag GmbH International | Accessing data stored in a memory of a surgical instrument |
| 8820608, | Nov 16 2011 | Olympus Corporation | Medical instrument |
| 8833631, | May 16 2011 | SPEC150, LLC | Delivery applicator for radioactive staples for brachytherapy medical treatment |
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